摘要
麦草浆制浆造纸废水可生化性差,采用混凝-加核絮凝组合工艺处理后,出水CODCr仍偏高,而CODCr残留问题一直是困扰制浆造纸企业水处理的难点。为探究其成因,采用气相色谱与质谱联用(GC-MS)全扫描有机物定性分析方法对处理前后的废水进行了分析。结果表明,处理后废水CODCr偏高主要是由留在水中未被成功去除的小分子有机物所致,如邻苯二甲酸二异丁酯和邻苯二甲酸单乙基己酯等;通过测定处理前后废水UV254,间接反映出混凝-加核絮凝组合工艺对麦草浆制浆造纸废水中难降解大分子芳烃类有机污染物有较好的去除效果,同时提高了其可生化性。
The CODCr concentration of papermaking waste water using wheat straw pulp as raw material is still rather higher after treating with the coagulation-nuclear flocculation process mainly due to its difficult biodegradability, the residual CODCr in the treated waste water always is a difficult problem.To explore its causes, pre- and post-treatment waste water were analyzed by GC-MS and UV 254 .The results showed that, small molecules organic contaminants remained in the water was the main reason causing high CODCr , such as 1,2-benzenedicarboxylic acid, bis(2-methylpropyl) ester and 1,2-benzenedicarboxylic acid, mono(2-ethylhexyl) ester.The results also indirectly indicated that the combination process had good effect on the refractory aromatic macromolecule organic pollutants, and could improve biodegradability of the waste water.
作者
宋晓乔
刘罡
李天昕
宋少花
SONG Xiao-qiao;LIU Gang;LI Tian-xin;SONG Shao-hua(Xi an University of Architecture and Technology Huaqing College,Xi an,Shaanxi Province,710043;Shaanxi Hailan Environmental Protection Technology Co.,Ltd.,Xi an,Shaanxi Province,710043;School of Civil and Environmental Engineering,Beijing University of Science and Technology,Beijing,100083)
出处
《中国造纸学报》
CAS
CSCD
北大核心
2018年第4期12-16,共5页
Transactions of China Pulp and Paper
基金
陕西省教育厅专项科研计划项目(No.18JK1021)
作者简介
宋晓乔,女,1986年生;硕士,讲师;主要研究方向:工程水处理。
